556172870 has 24 divisors (see below), whose sum is σ = 1100397312. Its totient is φ = 202244240.

The previous prime is 556172861. The next prime is 556172873. The reversal of 556172870 is 78271655.

It is a super-2 number, since 2×556172870² = 618656522648073800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556172873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228614 + ... + 231033.

It is an arithmetic number, because the mean of its divisors is an integer number (45849888).

Almost surely, 2^556172870 is an apocalyptic number.

556172870 is a deficient number, since it is larger than the sum of its proper divisors (544224442).

556172870 is a wasteful number, since it uses less digits than its factorization.

556172870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459676 (or 459665 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 41.

The square root of 556172870 is about 23583.3176207250. The cubic root of 556172870 is about 822.3750644023.

The spelling of 556172870 in words is "five hundred fifty-six million, one hundred seventy-two thousand, eight hundred seventy".